After a week of reading, I just got to here in this epic thread. Thanks for the pics and details above bout mag length.

Separately, if the Lott has a 1:10 twist, and was throated to match the SAAMI WM chamber, then it might do better with the very high BC bullets shown some pages back if one were inclined to do some very long range target shooting with their 458. Of course, you would want a heavier gun and probably a break or suppressor on the gun to make it a comfortable to shoot LR precision gun. Definitely outside the scope of hunting with these things the way most of us do. Just interesting to ponder.

I have taken notes on reloading throughout this thread. To recap though, what is the consensus on the best powder to choose for the 404 Hammer bullets? Can non magnum primers be used for range practice, or are magnums really required regardless?

Thanks to all of you for helping me get started in the 458 world!